php sql connection
<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";
// Create connection
$conn= mysqli_connect($servername,$username,$password,$dbname);
// Check connection
if (!$conn) {
die("Connection failed: " . mysqli_connect_error());
}
echo "Connected Successfully.";
?>php connect to mysql
$servername = "localhost";
$username = "username";
$password = "password";
// Create connection
$conn = new mysqli($servername, $username, $password);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully";
Simplified
$conn = mysqli_connect('localhost', 'username', 'password');
$database = mysqli_select_db($conn, 'database');how do you connect the database
I USE JDCB
I use CONNECTION database to make connection
I create STATEMENT than I use statement to create query
And run the query and get the RESULT SET
Connection = import java.sql.Connection;
Driver manager = import java.sql.DriverManager;
Connection connection = DriverManager.getConnection(url, userName, passWord);
Connection String Syntax:
jdbc:DataBaseType"subprotocal:Host:port:SID
After succesfully created the connect next step is STATEMENT
import java.sql.Statement;
Statement statement = connection.createStatement();
-We use createStatement() method to create the statement from our connection.
-The result we get from this type of statement can only move from top to bottom,
not other way around
Once we have statement we can run the query and get the result to
ResultSet format
import java.sql.ResultSet;
We use the method executeQuery() to execute our queries
ResultSet result = statement.executeQuery("Select * from employees");database connection
Connection =
Helps our java project connect to database
Statement =
Helps to write and execute SQL query
ResultSet =
A DataStructure where the data from query result stored
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++
After succesfully created the connect
next step is STATEMENT
Statement statement = connection.createStatement();
We use createStatement() method to create
the statement from our connection.
-The result we get from this type of statement
can only move from top to bottom,
not other way around
Statement statement = connection.
createStatement(ResultSet TYPE_SCROLL_INSENSITIVE
,ResultSet CONCUR_READ_ONLY);
-The result we get from this type of
statement can freely move between rows
Once we have statement we can run
the query and get the result to
ResultSet format
import java.sql.ResultSet;
We use the method executeQuery()
to execute our queries
ResultSet result = statement.
executeQuery("Select * from employees");Copyright © 2021 Codeinu
Forgot your account's password or having trouble logging into your Account? Don't worry, we'll help you to get back your account. Enter your email address and we'll send you a recovery link to reset your password. If you are experiencing problems resetting your password contact us
